{"id":202483,"date":"2025-05-13T13:18:28","date_gmt":"2025-05-13T05:18:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202483\/"},"modified":"2025-05-13T13:18:28","modified_gmt":"2025-05-13T05:18:28","slug":"%e5%a6%82%e4%bd%95%e7%bc%96%e5%86%99%e4%b8%80%e4%b8%aa%e5%ae%89%e5%85%a8%e4%b8%94%e9%ab%98%e6%95%88%e7%9a%84-php-%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202483\/","title":{"rendered":"\u5982\u4f55\u7f16\u5199\u4e00\u4e2a\u5b89\u5168\u4e14\u9ad8\u6548\u7684 PHP \u51fd\u6570"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u7f16\u5199\u4e00\u4e2a\u5b89\u5168\u4e14\u9ad8\u6548\u7684 PHP \u51fd\u6570<\/h1>\n

\u5b66\u4e60\u6587\u7ae0<\/span>\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0\u300a\u5982\u4f55\u7f16\u5199\u4e00\u4e2a\u5b89\u5168\u4e14\u9ad8\u6548\u7684 PHP \u51fd\u6570\u300b<\/span>\u5c06\u4f1a\u4ecb\u7ecd\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60\u6587\u7ae0<\/span>\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

\u5728 PHP \u4e2d\uff0c\u7f16\u5199\u5b89\u5168\u4e14\u9ad8\u6548\u7684\u51fd\u6570\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a\u9a8c\u8bc1\u53c2\u6570\u4ee5\u9632\u6b62\u653b\u51fb (filter_var())\u8f6c\u4e49\u8f93\u51fa\u4ee5\u4fdd\u62a4\u514d\u53d7 XSS \u653b\u51fb (htmlspecialchars())\u9632\u6b62 SQL \u6ce8\u5165 (\u9884\u5904\u7406\u8bed\u53e5\/\u7ed1\u5b9a\u53c2\u6570)\u4e3a\u4e86\u63d0\u9ad8\u6027\u80fd\uff0c\u8bf7\uff1a\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u51fd\u6570\u8c03\u7528\u4f7f\u7528\u7f13\u5b58\u7f16\u5199\u9ad8\u6548\u7684\u7b97\u6cd5<\/p>\n

<\/p>\n

\u5982\u4f55\u5728 PHP \u4e2d\u7f16\u5199\u5b89\u5168\u4e14\u9ad8\u6548\u7684\u51fd\u6570<\/strong><\/p>\n

\u5728 PHP \u4e2d\u7f16\u5199\u5b89\u5168\u4e14\u9ad8\u6548\u7684\u51fd\u6570\u5bf9\u4e8e\u7f16\u5199\u5065\u58ee\u4e14\u53ef\u7ef4\u62a4\u7684\u5e94\u7528\u7a0b\u5e8f\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u6700\u4f73\u5b9e\u8df5\u548c\u6280\u672f\uff0c\u5e2e\u52a9\u60a8\u521b\u5efa\u5b89\u5168\u4e14\u9ad8\u6548\u7684 PHP \u51fd\u6570\u3002<\/p>\n

\u53c2\u6570\u9a8c\u8bc1<\/strong><\/p>\n

\u9a8c\u8bc1\u51fd\u6570\u8f93\u5165\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u9632\u6b62\u653b\u51fb\u8005\u5229\u7528\u672a\u9a8c\u8bc1\u7684\u8f93\u5165\u6765\u6267\u884c\u6076\u610f\u64cd\u4f5c\u3002\u53ef\u4ee5\u4f7f\u7528 filter_var()<\/code> \u51fd\u6570\u5bf9\u8f93\u5165\u8fdb\u884c\u8fc7\u6ee4\u548c\u9a8c\u8bc1\uff0c\u4f8b\u5982\uff1a<\/p>\n

function validateInput($input) {\n  $filteredInput = filter_var($input, FILTER_SANITIZE_STRING);\n  return $filteredInput;\n}<\/pre>\n
\u8f6c\u4e49\u8f93\u51fa<\/strong><\/p>\n
\u5f53\u5c06\u6570\u636e\u8f93\u51fa\u5230 HTML \u6216 JSON \u7b49\u683c\u5f0f\u65f6\uff0c\u5fc5\u987b\u8f6c\u4e49\u7279\u6b8a\u5b57\u7b26\uff0c\u4f8b\u5982 <<\/code>\u3001><\/code> \u548c &<\/code>\uff0c\u4ee5\u9632\u6b62\u8de8\u7ad9\u70b9\u811a\u672c (XSS) \u653b\u51fb\u3002\u53ef\u4ee5\u4f7f\u7528 htmlspecialchars()<\/code> \u51fd\u6570\u5bf9\u8f93\u51fa\u8fdb\u884c\u8f6c\u4e49\uff0c\u4f8b\u5982\uff1a<\/p>\n
function escapeOutput($output) {\n  $escapedOutput = htmlspecialchars($output);\n  return $escapedOutput;\n}<\/pre>\n
\u9632\u6b62 SQL \u6ce8\u5165<\/strong><\/p>\n
SQL \u6ce8\u5165\u662f\u4e00\u79cd\u653b\u51fb\uff0c\u653b\u51fb\u8005\u901a\u8fc7\u672a\u7ecf\u9a8c\u8bc1\u7684\u8f93\u5165\u5411\u6570\u636e\u5e93\u4e2d\u6ce8\u5165\u6076\u610f SQL \u8bed\u53e5\u3002\u53ef\u4ee5\u4f7f\u7528\u9884\u5904\u7406\u8bed\u53e5\u6216\u7ed1\u5b9a\u53c2\u6570\u6765\u9632\u6b62 SQL \u6ce8\u5165\uff0c\u4f8b\u5982\uff1a<\/p>\n
$stmt = $conn->prepare(\"SELECT * FROM users WHERE username = ?\");\n$stmt->bind_param(\"s\", $username);\n$stmt->execute();<\/pre>\n
\u6027\u80fd\u4f18\u5316<\/strong><\/p>\n
\u9664\u4e86\u5b89\u5168\u6027\u4e4b\u5916\uff0c\u51fd\u6570\u7684\u6548\u7387\u4e5f\u975e\u5e38\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u63d0\u9ad8 PHP \u51fd\u6570\u6027\u80fd\u7684\u4e00\u4e9b\u6280\u5de7\uff1a<\/p>\n
    \n
  • \u907f\u514d\u4e0d\u5fc5\u8981\u7684\u51fd\u6570\u8c03\u7528<\/li>\n
  • \u4f7f\u7528\u7f13\u5b58\u6765\u5b58\u50a8\u7ecf\u5e38\u4f7f\u7528\u7684\u7ed3\u679c<\/li>\n
  • \u7f16\u5199\u9ad8\u6548\u7684\u7b97\u6cd5<\/li>\n<\/ul>\n
    \u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
    \u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u4e0a\u8ff0\u6700\u4f73\u5b9e\u8df5\u7f16\u5199\u7684\u5b89\u5168\u4e14\u9ad8\u6548\u7684\u51fd\u6570\uff0c\u7528\u4e8e\u9a8c\u8bc1\u548c\u8f6c\u4e49\u7528\u6237\u8f93\u5165\uff1a<\/p>\n
    function processUserInput($input) {\n  \/\/ \u9a8c\u8bc1\u8f93\u5165\n  $validatedInput = validateInput($input);\n  \n  \/\/ \u8f6c\u4e49\u8f93\u51fa\n  $escapedOutput = escapeOutput($validatedInput);\n  \n  \/\/ \u8fd4\u56de\u5b89\u5168\u4e14\u7ecf\u8fc7\u8f6c\u4e49\u7684\u8f93\u51fa\n  return $escapedOutput;\n}<\/pre>\n
    \u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u6700\u4f73\u5b9e\u8df5\uff0c\u60a8\u53ef\u4ee5\u7f16\u5199\u51fa\u5b89\u5168\u4e14\u9ad8\u6548\u7684 PHP \u51fd\u6570\uff0c\u4ece\u800c\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u5b89\u5168\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u548c\u6027\u80fd\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5982\u4f55\u7f16\u5199\u4e00\u4e2a\u5b89\u5168\u4e14\u9ad8\u6548\u7684 PHP...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202483","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202483","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202483"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202483\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202483"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202483"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202483"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}